Browsing by Contributor
Conic sections - Skiagraphs 12 Jan 2013
Conic sections produced by shadows. Another in the collection of animations made by the elica team.see details …
Constructions 17 May 2014
An extensive reference for geometric constructions.see details …
Deadly Marching Squares 11 Jul 2015
Interesting problem how to arrange marching bands (we see an amazing sequence) leads to exploration of square numbers, square root of two, proof by…see details …
Demo of chain rule using gears analogy 13 Jun 2012
GeoGebra applet for suitable for demo or student exploration clearly showing the gear ratio analogy for understanding the chain rule.see details …
Direct Numbers Dice Game 27 Dec 2010
A simple dice game for practising directed number. Option to play the computer or a friend – with offline (paper based) support.see details …
Egyptian mathematics and Numbers Hieroglyphs 6 Feb 2011
Some free resources including worksheets using Egyptian numbers. Nice wallpaper downloads – including one you can only obtain if you solve a…see details …
Every picture is made of waves - Sixty Symbols 28 Apr 2016
Good introduction to the idea of Fourier Analysis for image analysis. Also contains a discussion of randomness.see details …
Hands on teaching idea for Inverse Relations 10 Mar 2013
A great teaching idea to explore or consolidate the idea that an inverse relation is the reflection of a function in y=x. The associated blog post…see details …
Hypatia explores the locus of the ellipse to explain planetary orbits 28 Jan 2013
5 minute extract from the film “Agora” - an imagined biography of Hypatia of Alexandria. Suggests Hypatia may have worked out the elliptical…see details …